color:yellow brown,light red density:3.9-4g/cm3 hardness:1-3 Usage:smelting the aluminium,heat resistant, ceramic indust With high aluminum, low iron, low silicon and low alkali content, the mineralogy of the ore, together with processing techniques CHEMICAL/PHYSICAL ANALYSISROTARY 89ROTARY 87Al2O3 (%)8987SiO2 (%)56Fe2O3 (%)1.52K2O+NA2O0.250.25MGO+CAO0.50.5TiO2 (%)54L.O.I.0.60.6Bulk density(g/cm3 ...